diff --git a/src/ifcopenshell-python/ifcopenshell/geom/main.py b/src/ifcopenshell-python/ifcopenshell/geom/main.py
index 8fd68a4c62..e045305390 100644
--- a/src/ifcopenshell-python/ifcopenshell/geom/main.py
+++ b/src/ifcopenshell-python/ifcopenshell/geom/main.py
@@ -105,7 +105,6 @@ SERIALIZER_SETTING = Literal[
     "use-element-names",
     "use-element-guids",
     "use-element-step-ids",
-    "use-material-names",
     "use-element-types",
     "y-up",
     "ecef",